The Magpul STR (Storage/Type Restricted) is a drop-in replacement buttstock for AR15/M4 carbines using mil-spec sized receiver extension tubes. A storage-capable version of the CTR®, the STR has improved cheek weld and 2 water resistant battery tubes on a compact, reinforced polymer A-frame design.

A shielded operation lever and supplemental friction locking system prevent accidental operation and minimize excessive stock movement for enhanced weapon stability and accuracy. The STR incorporates 2 integral sling loops, a reversible push-button QD sling mount, and a replaceable 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.

• Mounts on commercial-spec tubes
• 2 water-resistant battery storage tubes
• Each tube will store up to 2 CR123A lithium or AA batteries
• Supplemental friction lock minimizes wobble
• Premium chrome-silicon lock spring provides positive locking and long service life
• Sloping cheek weld provides a wide contact surface for user comfort
• Shielded release latch prevents snagging and accidental operation
• Replaceable rubber butt-pad offers anti-slip surface and increased impact protection
• Compatible with receiver-mount sling attachments
• International Traffic in Arms Regulations-controlled product
• Made in the USA

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Key Specifications